Finish-remover.



Tan sTaTTs raTnnT CARLETON ELLIS, 0F MONTCLAIR, NEW JERSEY, ASSIGNOR TOCHADELOID CHEMICAL COMPANY, OF NIEVV YORK, N. Y., A CORPORATION OF WESTVIRGINIA.

FINISH-REMOVER.

No Drawing.

T 0 all whom it may concern:

Be it known that T, CARLETON ELLIS, a citizen of the United States, andresident of Montclair, Essex county, New Jersey, have made certain newand useful Inventions relating to Finish-Removers, of which thefollowing is a specification.

This invention relates to removers and relates especially to removerscomprising carbon-tetrachlorid or other chlorinated or other solventsand prepared by the incorporation of suitable salt thickeners such asacetates in alcohol or other finish solvent material, thereby producingesterification or condensation products, if desired, with theincorporation of suitable strong sulfuric or other acid material.

Acetates, such as metallic acetates including potassium,ammonium,.sodium, magnesium and barium acetates, are quite soluble inmethyl, ethyl and other alcohols and in other allied loosening finishsolvent materials (that is, solvents of a generally alcoholic characteror action in removers) such as the allied ketonic solvents, includingmethyl ethyl ketone, methyl acetone (that is, a composition containingabout of acetone, some'wood alcohol and the balance higher ketones) andacetone. The solution may be readily effected as by heating thealcoholicv or similar solvent body in a reflux condenser in contact withan excess of the desired acetate or other salt capable i of effectingesterification, suitable amounts of acid material such as strong oranhydrous sulfuric or hydrochloric acid being incorporated if desired,the temperature being carried up to near the boiling point of thesolvents used. Or, if desired, the solution may take place in a digesterpreferably in the presence of an excess of the acetate, the pressure andtemperature being carried up to any desired point to facilitate solutionand the resulting esterification, although such increase of temperatureis not always necessary to effect the desired conversion of the solventmaterial. Under such conditions the alcohol and strong acid which may beslowly added in amounts nearly sufiicient to completely combine with thebase of the acetate used react to form the corresponding metallic saltand acetic esters with the alcohol or other solvents employed. suchacetic or similar esteric solvents materially adding to the finishsoftening and solvent action of v Specification of Letters Patent,

evaporation of these solvents.

-]Patented Jan, 1111, rare.

Application filed November M, 1910. Serial No. 592,342.

the remover. Among other salts capable of effecting such esterificationare other alcoholsoluble salts preferably having organic acid radicalsof the fatty or aromatic series, such as formates, propionates,butyrates, and so forth.

In the removal of finish by organic solvents, thickeners are oftennecessary especially when the compositions are used on verticalsurfaces, so that the salts mentioned have a desirable thickeningaction. In these compositions the salts of sodium and potassium may beused as thickeners and also such lnorganic bodies as sodium sulfate forinstance, which may be produced in connection-with the removeringredients as indicated or added thereto, although the preferable saltsor compounds added are those with an organic acid such as acetic,oxalic, lactic and the like. The organic solvents may be benzol and itsderivatives, alcohols and the like, ketones, acids of an organiccharacter and other bodies having generally similar solvent action inremovers.

A suitable illustrative remover composition involving such componentsmay be made by mixing three parts of acetone, two parts of toluol andfour parts ofsodium acetate, Wax, such as paraflin or spermaceti may beadded, if desired, one or two per cent. being generally needed toprevent Another illustrative remover composition may" be made by mixingthree parts of wood alcohol, one part of acetic acid, one part of benzoland one-half part of benzin. One part of sodium oxalate and two to fourparts of sodium acetate may be added to thicken these solvents.

Another illustrative remover of this character may be formed byincorporating seven ill) ties. .Eleven parts of carbon-tetrachlorid inwhich one part of paraifin or other waxy material may if desired bedissolved, may then be incorporated with the mixture'and also four partsof crude terpineol or pine oil and one-half part of anhydrous ammoniumacetate which may of coursebe prepared by allowing dry ammonia gasutopercolate through glacial. acetic acid. The particles of sodium sulfateformed are agglomerated with the colloidal waxy material and uni-.formlydistributed by the continued agitation of the mixture so as togive a very desirable stiffening material throughout the body'of theremover. The presence of ammonium acetate keeps the remover alkaline bythe esteric action of such acetate mate.

rial, thus having a valuable antacid action and effectually neutralizingany acid tendency of the chlorinated solvents, the am- .monia vaporsprotecting the portion of the container above-the liquid which is ofcourse desirable. It is not necessary to add am monium acetate to suchmixtures since any free ammonium salt incorporated will give a similarresult when in the presence of ace tates of basic metals capable ofdisplacing the ammonia radical and having such esteric action as hasbeen indicated. Insteadof the sodium acetate referred to an equivalentamount of potassium or" other acetate may be used, it being understoodthat calcined or other anhydrous salts are desirable in such removers toavoid hydrolysis. Instead of thecrude terpineol referred to otherpenetrating finish solvent material, that is, finish solvents havinggenerally benzolic character ,or action in removers comprising benzol,-

toluol,' xylol, naphtha, benzin and other petroleum hydrocarbons, aswell as wood turpent1ne, turpentine and terpineol may be.

used to some extentat least, althoughjhe more volatile and inflammableshould only 'be used in small proportions'if the noninflammablecharacter of the remover is important. Other chlorinated finish solventmaterial, such as chlorinated acetylene for. instance may'also be usedand mav replace, to some extent at least .carbon-tetrachlorid in" suchremovers as indicated.

Another lllustrative remover 'ma-y comprise nine parts of grain alcohol,one part of wood alcohol, eleven parts of carbon-tetrachlorid, one partof ammonium acetate, one

to three parts of amvl acetate which may be added inconsiderableouantity to such removers without materially increasingtheir "inflammability, two parts "of carbolic acid and one part of wax.

Another illustratlve remover may comprise nine parts of denaturedalcohol, one

part of sodium acetate, one-half part of am-' ammonium chlorid orsulfate.

Another illustrative remover may comprise eleven parts of denaturedalcohol, one part of sodium acetate, one part of ammonium chlorid, nineparts of carbon-tetrachlorid with which one part of paraffin may bedissolved, if desired. 7 I

.The invention has been described in this case which comprisessubject-matter taken fromthe Ellis United States patent applicationsNos. 389.366, filed August 20, 1907, and

,No. 144,239, filed July 18, 1908, in connection with a. number ofillustrative ingredients, formulas, proportions and methodsofpreparation, to the details of which the.invention is not of course tobe limited.

- What is claimedis:

1. A compoundconsisting of alcohol, benzol'and an acetate of a. metal. I

2. A compound consisting of alcohol, ben- -zol and an acetate of a metaldissolved therein.

3. A finish remover comprising organic solvents and sodium acetate.

4. A .finish remove-r comprising benzol, alcohol and an organic salt ofsodium as a thickener. I

'5. A finish remover co-mprisingconsiderableproportions ofpenetratingand of loosening finish solvent material and a crystal-.

lizable organic salt of an alkali incorporated therewith. l

. '6. A finish remover consisting largely of composite volatile organicsolvent material including a penetrating solvent and a crysj tallizablemetallic salt of a fatty acid incorported therewith.

i 7. A finish remover comprisingorganic volatile finish solvent materialand a crystal;

lizable organic alt of a metal incorporated therewith. n v oaa n'rouELLIS. Witnesses: e A

HARRY L. DUNCAN,

JESSIE B. KAY.

